aiofiles.open是一个异步函数,它返回一个异步上下文管理器,该管理器确保文件在操作完成后被正确关闭。 需要注意的是,使用async with语句需要配合异步库和异步上下文管理器来使用。例如,上面的例子中使用了aiofiles库来提供异步文件操作的功能。 总结来说,async with的用法如下: python复制代码 asyncwithasync_context_...
importaiofilesasyncdefread_file(filename):asyncwithaiofiles.open(filename,'r')asf:contents=awaitf.read()print(contents)asyncio.run
async def upload_file(self,up_token,key,path,url="http://up-z1.qiniup.com",params=None,mime_type='application/octet-stream',file_name=None,metadata=None): async with aiofiles.open(path, mode='rb') as f: contents = await f.read() fields = {} if params: for k, v in params.it...
async with ClientSession() as session: # 网络IO请求,获取响应 async with session.get(url)as res: if res.status == 200: print("下载成功", res) # 磁盘IO请求,读取响应数据 apk = await res.content.read() async with aiofiles.open("demo2.apk", "wb") as f: # 磁盘IO请求,数据写入本地...
asyncdefhandle_uploaded_file(f):asyncwithaiofiles.open(f"uploads/{f.name}","wb+")asdestination:forchunkinf.chunks():awaitdestination.write(chunk)asyncdefasync_uploader(request):ifrequest.method=="POST":form=UploadFileForm(request.POST,request.FILES)ifform.is_valid():awaithandle_uploaded_file(req...
open(os.path.join(filepath2, "title.txt"), 'w') await fs.write(c_name) # 文件是否存在 if not os.path.exists(image_id) and not os.path.exists(image_id2): await log.info(f"SAVE_PATH:{image_id}") async with aiofiles.open(image_id, 'wb') as f: await f.write(buff) async ...
(file_name, chunk_size=8192*100, offset=0, length=None): async with aiofiles.open(file_name, "rb") as f: await f.seek(offset) remaining = length while True: bytes_length = chunk_size if remaining is None else min(remaining, chunk_size) data = await f.read(bytes_length) if not ...
"" res = await parse(url=url, **kwargs) if not res: return None async with aiofiles.open(file, "a") as f: for p in res: await f.write(f"{url}\t{p}\n") logger.info("Wrote results for source URL: %s", url) async def bulk_crawl_and_write(file: IO, urls: set, **...
3、实现了异步IO,引入协程概念,IO层面引入aiohttp,aiofiles等,使得本SDK适用于异步编程 Install python解释器版本要求:> 3.6 # 标准安装 pip install async_cow # 从官方源安装,你能获取最新版本SDK pip install async_cow -i https://pypi.python.org/simple ...
or you can also open from an async file descriptor using aiofiles (examples/simple_compress_gzip_with_aiofiles.py): pip install aiofiles And then run the following code: importaiofilesimportasyncstreamimportasyncioasyncdefrun():asyncwithaiofiles.open('examples/animals.txt','rb')asfd:asyncwithaiofile...